两种电动修复的对比性研究

Comparative Study of Two Electrokinetic Remediation

在自主研发的电动力学装置中,分别采用脉冲电源和直流电源两种供电方式对相同污染浓度的镉污染土壤进行修复,对比分析脉冲电动修复和恒直流电动修复的修复效果和能耗。实验结果表明:与恒直流电动修复相比,在相同的修复时间内,脉冲电动修复处理之后的土壤中镉的去除率提高29.6%~31.0%;在达到相同修复效果(即脉冲电动修复处理和恒直流电动修复处理过程中阴极电导率均为1285μs/cm时),脉冲电动修复的能耗可节省60.8%。

The pulsed power supply and the DC power supply were used to remediate the cadmium contaminated soil with the same pollution concentration in the self-made electrokinetic apparatus.The remediate effect and energy consumption were analyzed in both pulsed electrokinetic remediation and constant DC electrokinetic remediation.The results showed that,compared with constant dc electrokinetic remediation,the removal rate of cadmium in soil after pulse electrokinetic remediation increased by 29.6%-31.0%in the same restoration time;the total energy consumption of the pulse electrokinetic remediation was saved by 60.8%when the same remediate effect was achieved(the cathode conductivities were 1285μs/cm when both the constant DC electrokinetic remediation and the pulse electrokinetic remediation were used).